Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 45 insertions, 0 deletions

diff --git a/include/hw/misc/iotkit-sysinfo.h b/include/hw/misc/iotkit-sysinfo.h
new file mode 100644
index 000000000..91c23f90d
--- /dev/null
+++ b/include/hw/misc/iotkit-sysinfo.h
@@ -0,0 +1,45 @@
+/*
+ * ARM IoTKit system information block
+ *
+ * Copyright (c) 2018 Linaro Limited
+ * Written by Peter Maydell
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 or
+ *  (at your option) any later version.
+ */
+
+/*
+ * This is a model of the "system information block" which is part of the
+ * Arm IoTKit and documented in
+ * https://developer.arm.com/documentation/ecm0601256/latest
+ * QEMU interface:
+ *  + QOM property "SYS_VERSION": value to use for SYS_VERSION register
+ *  + QOM property "SYS_CONFIG": value to use for SYS_CONFIG register
+ *  + sysbus MMIO region 0: the system information register bank
+ */
+
+#ifndef HW_MISC_IOTKIT_SYSINFO_H
+#define HW_MISC_IOTKIT_SYSINFO_H
+
+#include "hw/sysbus.h"
+#include "qom/object.h"
+
+#define TYPE_IOTKIT_SYSINFO "iotkit-sysinfo"
+OBJECT_DECLARE_SIMPLE_TYPE(IoTKitSysInfo, IOTKIT_SYSINFO)
+
+struct IoTKitSysInfo {
+    /*< private >*/
+    SysBusDevice parent_obj;
+
+    /*< public >*/
+    MemoryRegion iomem;
+
+    /* Properties */
+    uint32_t sys_version;
+    uint32_t sys_config;
+    uint32_t sse_version;
+    uint32_t iidr;
+};
+
+#endif